Generally speaking, social security benefits are not taxable for Personal Income Tax purposes.

According to Pennsylvania State Department of Revenue, “pension distributions are not taxable providing the taxpayer is past age 59 1/2, fully retired from the issuer of the 1099R, or has met the years of service requirement for retirement. Normally, the 1099R will have the number 7 in the distribution code box indicating a normal distribution, which is not taxable.”